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<head>
    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        // 函数内部，局部变量和全局变量重名，则优先使用局部变量
        let money = 100;
        function play(){
            let money = 10;
            console.log(money);
        }
        play();
    </script>
</body>
</html>